Testing The Fire Source Identification; Airflow Monitoring; Malfunction Transmission; Maintenance Intervals - Bosch FAS-420-TM Operation Manual

92 en | Maintenance
2.
3.
CAUTION!
It is essential that you adhere to the calibration type (air-pressure-dependent or air-pressure-
independent) and, if necessary, the values for air pressure, height above sea level, and set
voltage in the test log.
4.
5.
NOTICE!
The diagnostic software can be used to save in file format all the stored and current data for
the device, as well as any settings made.
7.9

Testing the Fire Source Identification

Fire source identification is tested using the FAS-ASD-DIAG Diagnostic Software via the
"ROOM·IDENT" screen.
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2.
3.
4.
7.10

Airflow monitoring

A pipe breakage or pipe obstruction is indicated in the "Fault messages" screen of the
diagnostic software.
Check airflow monitoring in accordance with Section 6.6 Checking Airflow Monitoring, page 80.
7.11

Malfunction Transmission

A malfunction is indicated on the FAS-420-TM and on the fire panel, where applicable.
Proceed in accordance with Section 6.5 Checking Malfunction Transmission, page 80.
7.12

Maintenance Intervals

Maintenance comprises regular inspections and maintenance routines. The smoke aspiration
systems should be checked when commissioned and then quarterly. At each fourth check,
more comprehensive checks should be made, as described below:
F.01U.088.878 | 4.1 | 2010.11
If this check reveals no malfunctions, check the airflow monitoring by connecting the test
pipe and conducting the functional test in accordance with Section 6.7.2 Conducting the
Functional Test, page 82.
If, during troubleshooting, the pipe network has been changed, the original configuration
of the pipe network must be restored after the troubleshooting has been completed and
the airflow must be recalibrated.
Observe the current airflow value during ongoing maintenance or check it at the latest
during the next inspection.
If the target value is similar to the previous one, disruptive environmental influences are
the cause of the deviation. If these negative influences on the airflow monitoring cannot
be suppressed, increase the airflow range.
In the "ROOM·IDENT" screen, click the [Testing] button.
First select the preselection time and then click on the [Start] button to determine the
source of the fire.
The FAS-420-TM-R/-RVB switches to the aspiration pipe blowing out. The appropriate
smoke aspiration point must be charged with smoke until the selected preselection time
has expired. Once the preselection time has expired, the smoke must be available at the
aspiration point for another 10 to 15 seconds.
Once the preselection time has expired, the FAS-420-TM-R/-RVB switches to aspiration
and the aspiration point is determined by the measurement of the time until smoke is
detected. Check that it is the correct aspiration point.
Operation Guide
FAS-420-TM Aspirating Smoke Detector
Bosch Sicherheitssysteme GmbH